Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/12040#discussion_r57935636
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/Window.scala ---
@@ -885,6 +886,12 @@ private[execution] object AggregateProcessor {
val evaluateExpressions =
mutable.Buffer.fill[Expression](ordinal)(NoOp)
val imperatives = mutable.Buffer.empty[ImperativeAggregate]
+ // SPARK-14244: `SizeBasedWindowFunction`s created on driver side and
serialized to executor
+ // side contains global window partition size attribute reference
(`SizeBasedWindowFunction.n`),
+ // and must be rewritten using the one instantiated on executor side.
Otherwise, attribute
+ // binding fails because of different expression ID.
+ functions.foreach(rewriteWindowPartitionSize)
--- End diff --
I think it's better to use the `n` from driver, instead of using the one
created in executor. That could be found in any SizeBasedWindowFunction
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